The athletic kind, not the superhero.

Sure, Zac Efron's job at this point basically involves working out full-time — uh, you don't get those arms by doing nothing — but it seems that he's not actually the most athletic person in his family. (Yeah, we're surprised, too.) Instead, that award goes to his brother Dylan.

You know Dylan Efron, right? He's been traveling around the world with his big brother for their upcoming documentary, and is the person Zac credits as being the "pretty one" in the family. But now Dylan has gone and done something pretty impressive: he qualified to compete in the Ironman finals, and he did that by...well, completing an Ironman race.

That means he swam 2.4 miles, biked 112 miles, and ran a marathon (uh, 26.2 miles, NBD) ... all at the same time. Like, in the same day. One after the other. (We get winded after running for the snack table on free donut day.) He came in 12th place overall in the Wisconsin Ironman competition, and Zac was one of the first to congratulate him by posting the finish-line moment to Instagram, complete with the entirely apt flexing bicep emoji.

The celebration isn't over, however, as competing in the finals means Dylan will have to swim another 2.4 miles, bike another 112 miles, and run another marathon — and that's not even counting the time he'll spend training for the upcoming race. So basically what we're saying is, we know this is called the Ironman competition, but Dylan might as well be Superman.